PozStar S5 RTK GNSS Rover Base Set with 60 Degree IMU

Complete RTK GNSS Base and Rover System

The PozStar S5 RTK GNSS Rover Base Set provides a complete local correction system for surveyors, construction teams, civil engineers and GIS professionals who need centimetre-level positioning. The package uses one PozStar S5 receiver as a stationary base and a second S5 as the mobile rover.

The base receiver is installed over a fixed point using the included tripod, tribrach and adapter. It observes the same satellite signals as the rover and transmits correction data through the configured UHF radio link. The rover applies these corrections in real time, enabling accurate measurement and setting out without requiring every project to be within range of a public or commercial NTRIP network.

Suitable for Independent RTK Work

A base-and-rover configuration is particularly useful on remote construction sites, rural surveys, road projects, agricultural developments and other locations where mobile internet coverage is weak or a regional correction service is unavailable. It also gives project teams control over the position of their own base station and the correction source used by the rover.

The system can still be used with an NTRIP correction service when required. This gives users the flexibility to work with a local UHF base on one project and use network RTK on another, depending on site conditions and the available infrastructure.

Multi-Constellation and Multi-Frequency GNSS

Each PozStar S5 contains a 1,408-channel GNSS board that tracks signals from GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC and supported SBAS services. Tracking several constellations and frequencies gives the receivers access to more satellite observations than basic GPS-only equipment.

In practical fieldwork, this can help the receiver obtain and maintain a fixed RTK solution when parts of the sky are obstructed by buildings, machinery or vegetation. Satellite visibility, multipath, radio conditions and correct base setup still affect the final result, so normal GNSS surveying procedures remain important.

Centimetre-Level RTK Positioning

The PozStar S5 has a specified RTK accuracy of 0.8 cm + 1 ppm horizontally and 1.5 cm + 1 ppm vertically under suitable conditions. This makes the system suitable for construction stakeout, topographic surveying, control-point work, road measurement, utility mapping and accurate GIS data collection.

For construction teams, the rover can be used to locate design coordinates, mark foundation points, check installed features and record completed work. Surveyors can use it to collect coded points and site features, while GIS operators can accurately map assets such as inspection chambers, utility lines, signs and boundaries.

60 Degree IMU Tilt Compensation

The S5 rover includes a MEMS IMU that compensates for survey-pole angles of up to 60 degrees. The operator can place the pole tip directly on the required point while holding the receiver away from an obstruction.

This is useful beside building façades, beneath overhangs, close to fences, inside excavations and around parked equipment. It also reduces the time spent carefully levelling the pole during repetitive point collection, helping operators work more comfortably on uneven ground.

Local UHF Base to Rover Corrections

The optional internal UHF radio operates in the 410–470 MHz range and supports 0.5 W and 1 W transmission settings. The manufacturer specifies an operating range of approximately 3 to 5 km under its stated conditions. Actual working range depends on terrain, antenna height, buildings, vegetation, interference and the radio settings permitted in the country of use.

Supported radio protocols include TRIMTALK, TRIMMK3, TRANSEOT and DTSCOMM. This can make integration with compatible GNSS equipment possible, although radio frequency, protocol and channel settings must be matched before field deployment.

Rugged P9IV Android Field Controller

The included Geoelectron P9IV is a professional Android controller intended for outdoor surveying. It has a 5-inch HD touchscreen, an octa-core processor, Bluetooth 5.0 and IP67 environmental protection. Its physical keypad provides an alternative to touchscreen-only operation when the user is wearing gloves or working in wet conditions.

The controller connects to the rover through Bluetooth and provides the interface for configuring the receiver, entering antenna heights, selecting coordinate systems, collecting points and carrying out stakeout work. Its mobile-data capability can also be used for NTRIP corrections when the system is operated without the local base.

PozPad Surveying Software

PozPad is the Android field application supplied with the set. It supports control-point and survey-data collection, map input, drawing operations and stakeout workflows. The software displays receiver information and allows collected points to be stored as part of the active survey project.

Construction workers can use the software to navigate towards design coordinates, while surveyors can collect coded points for later CAD processing. GIS users can record accurate asset positions and descriptive information in one field workflow.

Designed for Demanding Field Conditions

The PozStar S5 receiver has an IP67-rated housing for protection against dust and temporary water immersion. Its die-cast structure, elastomer protection and durable coating are intended to withstand normal site handling, and the manufacturer specifies resistance to a two-metre drop under its test conditions.

Each receiver weighs approximately 793 grams. The relatively low rover weight reduces the load at the top of the survey pole, which can make a noticeable difference during long topographic surveys and repetitive construction measurements.

Battery Life and Data Management

Each S5 contains a rechargeable 6,700 mAh lithium-ion battery. The stated operating time is up to 12 hours in RTK rover use and up to 18 hours for static observations, depending on radio use, communication settings and other operating conditions.

A USB Type-C port is used for charging, data transfer and firmware updates. The receiver also includes Bluetooth, Wi-Fi access-point functionality and 8 GB of internal memory. Supported data formats include RTCM 2.x, RTCM 3.x, NMEA 0183 and static RINEX files.

Typical Applications

• Construction layout and as-built checks
• Topographic and land surveying
• Road and infrastructure projects
• Utility and underground-asset mapping
• Boundary and cadastral fieldwork
• GIS feature and asset collection
• Control-point establishment and static observations

What Is Included in the PozStar S5 Rover Base Set?

The set is configured with the principal equipment needed to establish a base station and carry out pole-mounted RTK rover measurements:

• PozStar S5 receiver for rover use
• PozStar S5 receiver for base-station use
• Geoelectron P9IV rugged Android controller
• PozPad surveying software
• Telescopic survey pole
• Controller bracket
• Survey tripod
• Tribrach and receiver adapter

The precise radio configuration, antenna accessories and regional frequency settings should be confirmed before ordering. Radio regulations vary by country, and the base and rover must be configured with compatible frequencies and protocols.

Configuration and Support from Global GPS Systems

Global GPS Systems can help configure the PozStar S5 Rover Base Set for the intended project and country of use. This includes matching the UHF settings, preparing the controller and field software, checking coordinate-system requirements and selecting any additional base or rover accessories.

Correct base coordinates, antenna heights, radio settings and project parameters are essential for reliable RTK results. A properly prepared system gives surveying and construction teams an independent positioning solution that can be moved between sites and used with either local radio corrections or a compatible NTRIP service.